Adaptive platform

ABSTRACT

An adaptive content platform includes one or more content-enabled, dependent applications, each of which includes a user interface and business logic. A services layer, which is interfaced with the dependent applications and a software infrastructure, provides one or more services that are usable by the dependent applications.

RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.13/169,801, filed on Jun. 27, 2011, now U.S. Pat. No. 8,589,957, whichis a continuation of U.S. patent application Ser. No. 11/933,071, filedon Oct. 31, 2007, now U.S. Pat. No. 7,971,144, which is a continuationof U.S. patent application Ser. No. 10/256,613, filed on Sep. 26, 2002,now U.S. Pat. No. 7,356,771, which claims the priority of U.S.Provisional Patent Application No. 60/394,441, entitled “AdaptiveContent Platform”, and filed on Jul. 9, 2002.

BACKGROUND

This invention relates to software development, and more particularly tosoftware development platforms.

For a suite of applications developed for a common software platform(e.g., an application server platform), each application within thesuite typically includes a group of services (e.g., content managementservices, workflow services, publishing services, search and queryservices) that are common amongst the applications in the suite.

As the software platform does not allow the services of one applicationto be shared by another, these services must be coded for and includedin each application written for the software platform, even thoughmultiple applications use common services.

SUMMARY

According to an aspect of this invention, an adaptive content platformincludes one or more content-enabled, dependent applications (thusforming an application layer), each of which includes a user interfaceand business logic. A services layer, which is interfaced with thecontent-enabled dependent applications and a software infrastructure(e.g., an application server), provides one or more services that areusable by the content-enabled, dependent applications.

One or more of the following features may be included. The serviceslayer includes a unique application programming interface for each ofthe one or more services, such that dependent applications using aspecific service make requests through the application programminginterface assigned to that service.

The services include a content management service (for storing andmanaging files), which includes: a repository service for storing files;and a search service for allowing users to search files stored by therepository service, for example.

The services also include a workflow and collaboration service (formanaging projects and users), which includes: a workflow service formanaging the workflow of files; a user management and authenticationservice for managing the users and user groups; and an events andnotification service for managing and broadcasting notifications to theusers that were generated by the services, for example.

Additionally, the services include a multi-modal content creationservice (for manual creation and automated importation and conversion offiles), which includes: a transformation and content handling servicefor converting the formats of files; a desktop integration service formanual contribution of content; and an import service for facilitatingfile importation from external systems, for example.

The services further include a multi-channel deployment service (forpublishing files to one or more publishing channels), which includes: apublishing service for publishing files to one or more publishingchannels (such as a web site, an email broadcast, a wireless broadcast,a syndication stream, or a printed publication, for example); a dynamicpublishing service; and a static publishing service, for example.

A data layer is interfaced with the software infrastructure, such thatthe data layer includes one or more databases.

The above-described adaptive content platform may be implemented in adistributed computing system, in that a first (or local) computingdevice executes the content-enabled, dependent applications, and asecond (or remote) computing device executes the services layer. Thissecond computer may be a web server.

In a distributed computing system, the first and second computingdevices are interconnected by a network, such as a local area network,the Internet, or an intranet, for example.

The above-described adaptive content platform and distributed computingsystem may be implemented as a method or a sequence of instructionsexecuted by a processor.

One or more advantages can be provided from the above. By providing theprogrammer with a common set of reusable services, applications are nolonger required to include stand-alone services. Since theseapplications are not required to include services, applicationdevelopment is significantly accelerated and deployment is simplified.Additionally, by using a common set of services, compatibility issuesare minimized. Further, as applications share a common set of services,application size is reduced. In addition, by separating an application'sservices from the application's business logic/user interface,distributed computing is possible, leading to superior scalability andavailability.

The details of one or more embodiments of the invention are set forth inthe accompanying drawings and the description below. Other features,objects, and advantages of the invention will be apparent from thedescription and drawings, and from the claims.

DESCRIPTION OF DRAWINGS

FIG. 1 is a block diagram of an adaptive content platform;

FIG. 2 is a block diagram of a content management group of the adaptivecontent platform;

FIG. 3 is a block diagram of a workflow and collaboration group of theadaptive content platform;

FIG. 4 is a block diagram of a multi-modal content creation group of theadaptive content platform;

FIG. 5 is a block diagram of a multi-channel deployment group of theadaptive content platform;

FIG. 6 is a block diagram the adaptive content platform incorporatedinto a distributed computing system;

FIG. 7 is a flow chart of a distributed computing method; and

FIG. 8 is a flow chart of a multi-tier software development method.

DETAILED DESCRIPTION

Referring to FIG. 1, an adaptive content platform 10 includes one ormore dependent applications 12, 14, 16, each of which includes a userinterface (e.g., user interface 18) and business logic (e.g., businesslogic 20). This group of dependent applications may be referred to as anapplication layer 22. Each user interface 18 allows a user of thedependent application to access and use the functionality of thedependent application. Business logic 20 performs the functions nativeto the dependent application. Note that while dependent applicationstypically include some form of user interface, this is not required.

Typically, the dependent applications 12, 14, 16, are content-enableddependent applications, in that they manage and process content (e.g.,documents, images, audio clips, video clips). Examples ofcontent-enabled applications are web content management systems,shareholder and regulatory reporting applications, corporate marketingand communications systems, newspaper publishing systems, and so forth.Content-enabled applications typically include a combination of contentmanagement, workflow management, and publishing capabilities.

Adaptive content platform 10 is a multi-tiered software architecturethat includes a services layer 24 for interfacing the application layer22 and a software infrastructure 26 (e.g., an application server).Examples of an application server are BEA Weblogic™, and IBM Websphere™,both of which implement the Java™ 2 Enterprise Edition standard (J2EE).

Services layer 24 provides a group of services 28, 30, 32, which areavailable for use by dependent applications 12, 14, 16. Examples ofthese services include content management services, search services, andfile conversion services, for example. These services, which will bediscussed below in greater detail, are shared services common to thedependent applications; as opposed to each dependent application'snative functions, which are handled by the dependent application'sbusiness logic.

Dependent applications 12, 14, 16 may be J2EE (“Java™ 2 EnterpriseEdition”) compliant dependent applications that adhere to v1.3 standardsand are compatible with and run on a Java™ 2 Enterprise Editionapplication server.

A data layer 34 is interfaced to the software infrastructure 26, andprovides data services for platform 10. Data layer 34 may provide accessto database servers 36, such as Oracle™, IBM DB2™, and Microsoft SQLServer™. Further, data layer 34 may provide access to file servers 38,such as Microsoft Windows 2000 Servers™, Microsoft Windows NT Servers™,and Unix Servers™. Additionally, data layer 34 may allow access tolegacy systems 40 (i.e., applications and data that have been inheritedfrom languages, platforms, and techniques earlier than currenttechnology).

Data layer 34 is typically interfaced with an operating system (OS)layer 42, which includes the operating system that manages theabove-described layers, infrastructures, and dependent applications.Examples of compatible operating systems are Windows™, Solaris™, andLinux™.

Typically, a web server layer 44 is interfaced with the applicationlayer (i.e., dependent applications 12, 14, 16) and allows a user (notshown) to use and access the functionality of the individual dependentapplications from with a web browser 46 (e.g., Microsoft InternetExplorer™, Netscape Navigator™). Examples of web server layer 44 areMicrosoft Internet Information Server™, and Apache web Server™.

By combining the user interface 18 and business logic 20 of a dependentapplication 12 with one or more of the services 28, 30, 32 offered bythe services layer 24, the functionality of a “stand-alone” independentapplication 48 can be emulated without the application having to includededicated services 50, 52, 54.

Concerning the services 28, 30, 32, offered by services layer 24, theseservices can typically be loosely described as four groups of services,namely: content management; workflow and collaboration; multi-modalcontent creation; and multi-channel deployment, each of which will bediscussed below in greater detail.

Referring to FIG. 2, the content management group 100, which stores andmanages files and content used by the adaptive content platform, mayinclude a repository service 102 and a search service 104.

Repository service 102 works in conjunction with the data layer(generally), and the database servers, the file servers, and the legacysystems (specifically) to store, organize, and manage files and content(hereinafter “files”).

Repository service 102 allows for the production, organization, andmanagement of numerous content types that define the specific type offiles being produced and managed. Additionally, repository service 102allows users/administrators to define numerous property fields ormeta-data fields (e.g., release date, revision number, production date,revision date, and approval date, for example) that define and refinethe files stored by the data layer. Access to the files managed byrepository service 102 can be controlled by regulating the users who canview, check out, edit, print, and save a particular file, for example.Additionally, the data structure in which the files are stored (e.g.,the directory tree structure) is defined and controlled using repositoryservice 102. Typically, repository service 102 works in conjunction witha relational database, e.g., database 36 (FIG. 1), that is accessedthrough data layer 34 (FIG. 1).

The search service 104 allows a user to search the files stored by therepository service 102. Searches may be performed on either fileproperties or content. If the files are stored in a structured database(as described above), search service 104 may be an SQL (“structuredquery language”) database query engine. Alternatively, if the files arestored as HTML or XML (“Extensible Markup Language”) based documents,search service 104 may use search engine technology to generate a listof relevant documents.

The dependent applications 12, 14, 16 (FIG. 1) described above mayaccess each service offered by content management group 100 (e.g.,repository service 102 and search service 104) by making the appropriaterequest of and establishing a connection through the API (“applicationprogramming interface”) assigned to that particular service. Forexample, API 106 is assigned to repository service 102, and API 108 isassigned to search service 104. Therefore, if a user of a dependentapplication (e.g., dependent application 12, FIG. 1) wanted to execute asearch for a particular file, dependent application 12 would make theappropriate request from API 108.

Referring to FIG. 3, the workflow and collaboration group 150, whichmanages projects and users of the adaptive content platform, may includea workflow service 152, a user management and authentication service154, and an events and notification service 156.

The workflow service 152 allows the administrator or user to control theworkflow of files through the adaptive content platform. For example, ifa file is produced for publishing purposes, that file might need to beapproved by a midlevel manager prior to it being sent to an upper levelmanager. Further, the upper level manager might have to approve the fileprior to it being published or otherwise disseminated. Therefore,workflow service 152 could mandate that the file be approved by amidlevel manager prior to it being sent to the higher level manager, whoapproves it prior to publication. Further, workflow service 152 mayassign time limits for the completion of certain tasks, such as themidlevel or upper level review and approval process.

The user management and authentication service 154 provides a set oftools to the user/administrator that allows them to manage users anduser groups. Individual users can be produced and deleted using usermanagement and authentication service 154. Further, the rights andprivileges of these individual users also can be controlled andregulated. Additionally, these users can be assigned to, moved between,and deleted from various users groups, which are also maintained usinguser management and authentication service 154. Further, as rights andprivileges can be assigned to a user group, by adding an individual userto a user group, the rights or privileges of an individual user can beefficiently defined.

The events and notification service 156 allows for the delivery ofnotification events generated by the services offered by the appletservice layer 24 (FIG. 1). These message can be delivered to individualusers of the system, broadcast to entire user groups, or delivered tothe various services offered by the applet service layer 24 (FIG. 1).

As above, the dependent applications 12, 14, 16 (FIG. 1) described abovemay access each service offered by workflow and collaboration group 150(e.g., workflow service 152, user management and authentication service154, and the events and notification service 156) by making theappropriate request of and establishing a connection through the APIassigned to that particular service. For this particular group, API 158is assigned to the workflow service 152, API 160 is assigned to the usermanagement and authentication service 154, and API 162 is assigned tothe events and notification service 156.

Referring to FIG. 4, the multi-modal content creation group 200, whichimports and converts files for the adaptive content platform, mayinclude a transformation and content handling service 202, an importservice 204, and a desktop integration service 210.

The transformation and content handling service 202 provides file formatconversion services, thus allowing the user to import files of varioustypes and convert them over into a common format (e.g., XML and HTML).Converter templates are available for popular applications, such asMicrosoft Word™, Microsoft Excel™, Adobe PDF™, and MicrosoftPowerPoint™, for example.

The import service 204 allows for automated import of files fromexternal systems. Import service 204 is configured to monitor, on aperiodic basis, the files located on a network drive, an FTP (“filetransfer protocol”) site, and an HTTP site. When new files are detectedon one of these sources, the files are automatically imported into thesystem. Further, if a format conversion is required, import service 204will work in conjunction with transformation service 202 to import andconvert the file.

The desktop integration service 210 allows content to be contributed byusers via standard desktop creation tools. These tools include theMicrosoft Office™ suite, as well as Adobe™ and Macromedia™ applications.The service uses the WEBDAV protocol (WEB-based Distributed Authoringand Versioning), which is an extension of the HTTP protocol, tocommunicate with the desktop tools.

As above, the dependent applications 12, 14, 16 (FIG. 1) described abovemay access each service offered by multi-modal content creation group200 (e.g., transformation service 202, import service 204, and desktopintegration service 210) by making the appropriate request of andestablishing a connection through the API assigned to that particularservice. For this particular group, API 206 is assigned to thetransformation service 202, API 208 is assigned to the import service204, and API 212 is assigned to the desktop integration service 210.

Referring to FIG. 5, the multi-channel deployment group 250, whichpublishes files to one or more publishing channels, may include a staticpublishing service 252, and a dynamic publishing service 254.

The static publishing service 252 allows for proactive publishing offiles based on predefined templates. Therefore, the structure and formatof the file published (and the document produced) is defined ahead oftime and is not varied depending on the content of the document.Additionally, the content itself is semi-dynamic, in that it changesperiodically (e.g. a few times a week). An example of static documentsgenerated using a static publishing service is a newsroom home page of acorporate web site in which one hundred press releases are currentlybeing displayed. The home page is a collection of one hundred summarylinks, and each link leads to a press release detail page. A corporatecommunications officer can publish the home page and the one hundreddetail pages by invoking the static publishing service, which merges theappropriate press release content with the detail page template togenerate HTML. By generating the pages using static publishing, thecommunications officer ensures that web site visitors have fast pageretrieval, since the content is already in HTML format and does not needto be regenerated for every website visitor.

The dynamic publishing service 254 allows for reactive publishing offiles that are dynamically altered based on current conditions, userpreferences, and query results, for example. In an online auction housethat has one-hundred items for sale, a dynamic document may be createdin response to a user query. For example, while one-hundred items may beoffered, the user (an avid World War II buff) may only be interested inthose items that relate to World War II. Therefore, the user would entertheir search criteria and a dynamic document would be generated thatincludes fourteen items, each of which is related to World War U. Thisdynamically generated list, which itemizes the fourteen items, may alsospecify the starting bid, the current bid, and the auction ending timefor each item. By generating this document with dynamic publishingservices 254, documents can be generated that more accurately reflectcurrent conditions.

Regardless of whether the static publishing service 252 or dynamicpublishing service 254 produce the file, the file can be published overvarious channels, such as: a web site; an email broadcast; a wirelessbroadcast; a syndication stream; and a printed publication, for example.The file can also be published in various formats, such as HTML, XML,and PDF, for example.

For web site publishing, the file being published may be posted to awebsite so that the file is accessible by various users and guests. Ifsecurity or access is a concern, the file may be published on anintranet (which is not remotely accessible), or within a restrictedaccess user section of a website.

For email broadcasts, the file can be published as an attachment to anemail that is sent out to a distribution list of individual users.Alternatively, the file may be converted into a format (e.g., ASCIItext, and HTML) that is easily incorporated into the body of an email.

For wireless broadcasts, the file can be transmitted to users over awireless network. This file may be text-based (such as an emailattachment sent to a wireless email device) or multimedia-based (such asa sound file sent to a cellular telephone).

For syndication streams, the file may be published on data streams thatare text-based (such as streaming messages), audio-based (such asstreaming audio), video-based (such as streaming video), ormultimedia-based (such as streaming audio/video), for example.

For printed publications, the file being published may be printed ontraditional printing systems (laser printers) and distributed usingtraditional distribution paths (e.g., interoffice mail, courier, or thepostal service, for example).

As above, the dependent applications 12, 14, 16 (FIG. 1) described aboveaccess each service offered by multi-channel deployment group 250 (e.g.,static publishing service 252, and dynamic publishing service 254) bymaking the appropriate request of and establishing a connection throughthe API assigned to that particular service. For this particular group,API 256 is assigned to the static publishing service 252, and API 258 isassigned to the dynamic publishing service 254.

Referring to FIG. 6, a distributed computing system 300 is shown whichincorporates the adaptive content platform described above. Distributedcomputing system 300 includes a local (or first) computing device 302that executes one or more content-enabled dependent applications 12, 14.As described above, each of the dependent applications includes businesslogic and a user interface (FIG. 1).

A storage device 304 stores the individual instruction sets andsubroutines of dependent applications 12, 14. Storage devices 304 may bea hard disk drive, a tape drive, an optical drive, a RAID array, arandom access memory (RAM), or a read-only memory (ROM), for example.Local computing device 302 includes at least one processing unit (notshown) and main memory system (not shown).

A remote (or second) computing device 306 (e.g., a web server) executesthe services layer 24, as described above. Typically, services layer 24is interfaced with a software infrastructure (not shown), which isinterfaced with a data layer (not shown), which is interfaced with an OSlayer (not shown).

A storage device 308 stores the individual instruction sets andsubroutines of services layer 24 (and any additional required layers orintrastructure). Storage device 308 may be a hard disk drive, a tapedrive, an optical drive, a RAID array, a random access memory (RAM), ora read-only memory (ROM), for example. Remote computing device 306includes at least one processing unit (not shown) and main memory system(not shown).

Local computing device 302 and remote computing device 306 areinterconnected with a network 310, such as a LAN (local area network),WAN (wide area network), the Internet, or an intranet, for example.

While the above-described embodiment discusses the deployment of theservices layer on a single second computer, other configurations arepossible, such as those in which each service, or a group of services,is deployed on its own dedicated computer.

While the above-described embodiment describes a local and a remotecomputing device, this is not intended to define the physical locationof either computing device and is merely intended to indicate that thesecond computing device is remote (i.e., separate) from the firstcomputing device.

While the above-described embodiment discusses the use ofcontent-enabled dependent applications, other configurations arepossible, such as data-enabled dependent applications (i.e., thosedesigned to manage data, as opposed to content).

While the above-described embodiment specifies a software infrastructure24 that is an application server, other configurations are possible,such as a general-purpose operating system (e.g. UNIX, Windows 2000) ora special-purpose operating system (e.g. embedded OS, real time OS).

While the above-described embodiment illustrates the availability ofthree services and three dependent applications, the actual number ofservices and dependent applications can be adjusted based on systemrequirements.

Referring to FIG. 7, a distributed computing method 350 is shown. One ormore content-enabled, dependent applications are executed 352 on a localcomputing device. Each dependent application includes a user interfaceand business logic. A services layer, which is interfaced with thedependent applications and a software infrastructure, is executed 354 ona remote computing device. The services layer provides one or moreservices that are usable by the content-enabled, dependent applications.

A data layer, which includes one or more databases, is interfaced 356with the software infrastructure. A unique application programminginterface is assigned 358 to each of the services. Dependentapplications using a specific service make requests through theapplication programming interface assigned to that service.

The first and second computing devices are interconnected 360 with anetwork.

Referring to FIG. 8, a multi-tier software development method 400 isshown. One or more content-enabled, dependent applications are provided402, each of which includes a user interface and business logic. Aservices layer is provided 404, which is interfaced with the one or morecontent-enabled dependent applications and provides one or more servicesthat are usable by the content-enabled, dependent applications. Theservices layer is interfaced 406 with a software infrastructureinterfaced 408 with a data layer. The data layer includes one or moredatabases.

The embodiments described herein are not limited to the embodimentsdescribed above; it may find applicability in any computing orprocessing environment. The embodiments may be implemented in hardware,software, or a combination of the two. For example, the embodiments maybe implemented using circuitry, such as one or more of programmablelogic (e.g., an ASIC), logic gates, a processor, and a memory.

The embodiments may be implemented in computer programs executing onprogrammable computers that each includes a processor and a storagemedium readable by the processor (including volatile and non-volatilememory and/or storage elements). Each such program may be implemented ina high-level procedural or object-oriented programming language tocommunicate with a computer system. However, the programs can beimplemented in assembly or machine language. The language may be acompiled or an interpreted language.

Each computer program may be stored on an article of manufacture, suchas a storage medium (e.g., CD-ROM, hard disk, or magnetic diskette) ordevice (e.g., computer peripheral), that is readable by a general orspecial purpose programmable computer for configuring and operating thecomputer when the storage medium or device is read by the computer toperform the functions of the embodiments. The embodiments may also beimplemented as a machine-readable storage medium, configured with acomputer program, where, upon execution, instructions in the computerprogram cause a machine to operate to perform the functions of theembodiments described above.

The embodiments described above may be used in a variety ofapplications. Although the embodiments are not limited in this respect,the embodiments may be implemented with memory devices inmicrocontrollers, general purpose microprocessors, digital signalprocessors (DSPs), reduced instruction-set computing (RISC), and complexinstruction-set computing (CISC), among other electronic components.

The embodiments described above may also be implemented using integratedcircuit blocks referred to as main memory, cache memory, or other typesof memory that store electronic instructions to be executed by amicroprocessor or store data that may be used in arithmetic operations.

A number of embodiments of the invention have been described.Nevertheless, it will be understood that various modifications may bemade without departing from the spirit and scope of the embodimentsdescribed above.

The invention claimed is:
 1. A computer-implemented method within anadaptive content platform for decoupling an application layer from aservices layer, the computer-implemented method comprising:implementing, within the dependent applications layer, a plurality ofcontent-enabled dependent applications; implementing, within theservices layer, a plurality of different services, wherein the serviceslayer includes a unique application programming interface for each ofthe services, wherein a specific content-enabled dependent applicationof the plurality of content-enabled dependent applications using aspecific service makes a request through the unique applicationprogramming interface assigned to the specific service, and wherein amulti-modal content creation group of services is accessed by thespecific content-enabled dependent application through the uniqueapplication programming interface; and implementing a web layer thatconnects users to the dependent applications, wherein eachcontent-enabled dependent application is configured to interface with atleast one of the different services of the services layer, and processspecific content received from the services layer to emulate astandalone independent application.
 2. The method of claim 1, whereinthe services layer retrieves content from a data layer.
 3. The method ofclaim 1, wherein the services includes at least one of repositoryservices, workflow services, file handling services, and publishingservices.
 4. The method of claim 1, wherein the different services areshared by the plurality of content-enabled dependent applications. 5.The method of claim 1, wherein the services includes at least one ofcontent management services, workflow and collaboration services,multi-modal content creation, and multi-channel deployment services. 6.The method of claim 1, wherein each of the content-enabled dependentapplications includes a user interface and business logic, and the usersinteract with a particular content-enabled dependent application via arespective user interface.
 7. A computer hardware system including anadaptive content platform for decoupling an application layer from aservices layer, the computer hardware system comprising: at least oneprocessor configured to initiate and/or perform: implementing, withinthe dependent applications layer, a plurality of content-enableddependent applications; implementing, within a services layer, aplurality of different services, wherein the services layer includes aunique application programming interface for each of the services,wherein a specific content-enabled dependent application of theplurality of content-enabled dependent applications using a specificservice makes a request through the unique application programminginterface assigned to the specific service, and wherein a multi-modalcontent creation group of services is accessed by the specificcontent-enabled dependent application through the unique applicationprogramming interface; and implementing a web layer that connects usersto the dependent applications, wherein each content-enabled dependentapplication is configured to interface with at least one of thedifferent services of the services layer, and process specific contentreceived from the services layer to emulate a standalone independentapplication.
 8. The system of claim 7, wherein the services layerretrieves content from a data layer.
 9. The system of claim 7, whereinthe services includes at least one of repository services, workflowservices, file handling services, and publishing services.
 10. Thesystem of claim 7, wherein the different services are shared by theplurality of content-enabled dependent applications.
 11. The system ofclaim 7, wherein the services includes at least one of contentmanagement services, workflow and collaboration services, multi-modalcontent creation, and multi-channel deployment services.
 12. The systemof claim 7, wherein each of the content-enabled dependent applicationsincludes a user interface and business logic, and the users interactwith a particular content-enabled dependent application via a respectiveuser interface.
 13. A computer program product for decoupling anapplication layer from a services layer, the computer program productcomprising: a computer hardware storage device having stored thereincomputer usable program code for implementing an adaptive contentplatform, the computer usable program code, which when implemented by acomputer hardware system, causes the computer hardware system toperform: implementing, within the dependent applications layer, aplurality of content-enabled dependent applications; implementing,within a services layer, a plurality of different services, wherein theservices layer includes a unique application programming interface foreach of the services, wherein a specific content-enabled dependentapplication of the plurality of content-enabled dependent applicationsusing a specific service makes a request through the unique applicationprogramming interface assigned to the specific service, and wherein amulti-modal content creation group of services is accessed by thespecific content-enabled dependent application through the uniqueapplication programming interface; and implementing a web layer thatconnects users to the dependent applications, wherein eachcontent-enabled dependent application is configured to interface with atleast one of the different services of the services layer, processspecific content received from the services layer to emulate astandalone independent application, and the computer usable storagemedium is not a transitory, propagating signal per se.
 14. The computerprogram product of claim 13, wherein the services layer retrievescontent from a data layer.
 15. The computer program product of claim 13,wherein the services includes at least one of repository services,workflow services, file handling services, and publishing services. 16.The computer program product of claim 13, wherein the different servicesare shared by the plurality of content-enabled dependent applications.17. The computer program product of claim 13, wherein each of thecontent-enabled dependent applications includes a user interface andbusiness logic, and the users interact with a particular content-enableddependent application via a respective user interface.